Midterm Question 1 - Makeup

Question

A water supply company charges the water consumption, as follows:

a) Fixed amount of 10$.
b) For the first 30 cubic meters 0.6$/meter.
c) For the next 20 cubic meters 0.8$/meter.  
d) For the next 10 cubic meters 1$/meter.  
e) For every additional meter 1.2$/meter.   

Write a program that reads the water consumption in cubic meters and displays the bill.
寫一個輸入水的用量 輸出水費的程式

Example Input:

25

Output:

Cost: 25.00

Example Input 2:

44

Output:

Cost: 39.20

Example Input 3:
 

75

Output:

Cost: 72.00

 

Answer 1

Hidden content!
#include<stdio.h>
int main(void)
{
** * *     *** *      * c,total;
 * *  *    ** **       ***  *** * 

**** ***** **   ** **    *   *  
 **   **  **  *** *
**  *  ******  **** * ** ** *** *  *****  *  * ********* 
**     *** * * *** *  *  **  * *    *** *    *   * **** ** *** **     *** 
**   *  *    ** * *   

*  ** * ****   **    **  * if(c>30 && c<=50)
   {
**  **   **     ** ****    *  **** **    ** ***       ***  *  *  
* *      **** ***  *  *** *     *** **** **  **    * * **  **** *****

  *  *  * *   *  **
*** * * * *** * **    ** * if(c>50 && c<=60)
   {
**  **** **  ** * *** ****  * ** ***  **  **** **    *** *** * * 
*   *****  * ****** *   ***** ** ****   ***       *  *       *  *  ** * * 
    **    * **   * * **
 ****    * ** **   **  
   {
  *  ** ** ***      ** *    * **    ***  **   ******* *  **** * * 
      *   * **  *****    **  *  *  ******  *   ******* * ** *    * * **   *
 *****  ***  *   * **




}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

Answer 2

Hidden content!
#include <stdio.h>
#include <stdlib.h>

int main()
{
* ***** ** ** ***  * ***  * *  a;
 ***    ** **  *****    *     *     *   * * *  *  *

 * * **************   ** * ** (a<=30)
*  ** *  * *  ***  * * *     **        ** * %.2f",a*0.6+10);


**  **  *  *  *    **   *   ***** (a<=50)
**  ** * *  **   * *  ***   ***       ***     * *  * *       *** * ****    * *  * ****  *    *


** *   * * *  * * * *** ****** * (a<=60)
*  **** ***  **** ** * *****  * *  * *** ** *  *** **  * **** **** ***  *** * * *   *  *   


* * ***   *  *   ***  ***  (a>60)
  * *****   *     ***   ****  * * ** **     *  * *   ** *  ****    ****  * *  *  *

*   * **  *  **     **  *   
    **** **      *  **  *   *   0;
}

Comments

prog.c: In function 'main':
prog.c:7:13: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'float *' [-Wformat=]
     scanf("%d",&a);
             ^

Answer 3

Hidden content!
#include <stdio.h>
#include <stdlib.h>

int main()
{
  * *  * *  ***** ** **  *  * a;
 *  * ** ***  *   ***  *** ** **  *   ***    *********

   *** *** ****  * ***  * * *** (a<=30)
* * **    *   * *        **  * * ** * ****  %.2d",a*0.6+10);


 **   * *** ***    * *     * (a<=50)
 *  *** **      * * **   ****** * *   *  **  ****   * ******** * * **     *  ** **  ** **  ***  


    ** * *****    ** *  ****    (a<=60)
  *** ****   *   ** * *   * **   ******** *** *** ** ** ***  *     *** **     **        *  


 * *  ** **  *   *   *   (a>60)
**  * * *   * *** *       * **** ****   *  *  * *       *   **   *   *   * ******  *

**  *  * **   **  * ** *   * * 
   ** * *  * * ***    * *     0;
}

Comments

prog.c: In function 'main':
prog.c:10:22: warning: format '%d' expects argument of type 'int', but argument 2 has type 'double' [-Wformat=]
     printf("Cost: %.2d",a*0.6+10);
                      ^
prog.c:14:26: warning: format '%d' expects argument of type 'int', but argument 2 has type 'double' [-Wformat=]
         printf("Cost: %.2d",18+(a-30)*0.8+10);
                          ^

Answer 4

Hidden content!
#include  **  * **  *  **** *


int main(void)

{
       ***** * ** ***  y, fixed_charge=10;


*  **   * *   **  *  ****** ***  *    *   

 *****      * ** **   * (y<=30){


   * * ***    **      * *  ****   ** ** *** ** *   *  *  *       *
}

 if (y>30 ****  *   * * y<=50)
 *  ** ***  *  **   **   *  

***** *  *  ** **  *     **  * * **    * ***       **  ** **    **  * *  
*  * **  * *   *** *     * ***
 *  *   ** * **       **  ***  (y>50   * ** * * *    y<=60)
 *** *** * *** ** * *** **** * ***

   ** * *** ** ***** *** **  * * **  *  **   *  ***  * ***  ** *  ** ***  **
 }
   *   **   * **  ** ** * *    * * **    *  ** (y>60)
***   ****  ******  *  *** ** *

 *      * **** *   *  * **** **  *  * * *** ** *****  ******  *  * * ********
*  *  ** * *  * *  **   **   * 



return 0;

}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output

Answer 5

Hidden content!
#include      * **     * **


int main(void)

{
      *     **   *   * y, fixed_charge=10;


 * **** *   *   ** *  *    *  *  * ***   *  *

 *   **  *   *** *  *   (y<=30){


 * **   * *  *    **   *  *** * *** ** *      *   ** *  *  * * 
}

 if (y>30  *** * * ** * y<=50)
** * *  *** *****      **   

       * *   *  **  ** **  * ****** ****     **   *  *** **    *    
 * ******* * * *      * * *
  ** ***   **** *** ** * *  *  (y>50    * *  ***   y<=60)
** *  *    **    *      

 ***  *******  * * ****  ** ****  *  ******     *  ***  * * * *   *  **  * ******  *
 }
 * *** *  * *   *  **   * * **     ***** * (y>60)
***** ***  ** * * **  ** *  

 **  *** ** **    **   *   * *     **     ***  *** **  * * **  ** * **  * *
*    ** ***  *  *  ** * * 



return 0;

}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

Answer 6

Hidden content!
***  *  ** * * *  * *
int main()
{
int n;
float cost;
* *     ** *  * ***  * * * *  **
if(n>60)
* *** **   **    **  **     * * **   ** * **  *   * ** 
  ***  * * * **** *    * ** * ****
*   *       **** **      ** ***  * * ** *** *  
 **** *  ***** ** * ***      * * * 
*** ** ** **** * *    *    * **** * ** **
if(n<=30)
* * **** **  *************  ** *** ***  
***    * * ** **  %.2f",cost);

return 0;
}

Comments

prog.c: In function 'main':
prog.c:13:1: error: expected declaration or statement at end of input
 return 0;
 ^~~~~~

---

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

---

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

---

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output

Answer 7

Hidden content!
#include *   *   * * ***

int main(){

 *  ** ****    **  * * * *     *  sum,n;

   * * ***** * * *     * * **   *   *  *   ***

*  * **   * **** *  *** *  **** *
*      ***   ** * *****  ** = 10 + n*0.6;

  *  * *   **** *  **  *    *  * *    * *****  n <50)
****   **  * *   * *****  * ***   = 10 + 30*0.6 +  ******

 * *  ***     ** *   *  **   ** ****** *  * * *      ****
****  ***** **         **  = 10 + 30*0.6 + 20*0.8 + *    *  *

*    *  *  * *   **** * ** *    * ** * 
*   * *   **   ** * ** ***** = 10 + 30*0.6 + 20*0.8 + 10*1.0 + ********

  *** * *    ***** ** * *** * * ** *** * *** * *  **  ** sum);

 * **    *** **  ** ******* 0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output

Answer 8

Hidden content!
#include<stdio.h>
int main()
{
** ** * *      *    *   ***   *  a,b;
* **   * * **     *  ** ***   **  *      ****  * * *** 
*** **  **   *** **  **   **  **  ** *    **
    {
   *  ******** **   *   *   *** *****   *  * ** ** **   * 
*   ****  *  ** * * **     
*     *******   * * * *  *    *  * ***   *** * * *    *  * *   
    {
  *    ***  * * * ** * * *** **   *****  ** ***   *  * * ****** * 
   ** ** *   ****** * ***** *
 *  *** * **    **     *     * *** ***   *  **   ** *********
 *   ***   * *      *  * * 
  ** *** *  ***  * * ****** *** **  *** * *   *  ***  ***    *  ***** * ** 
    }
**** **  * *  * ******  ** ***  if(a>=60)
* ** **   *** **************
**    *****    * ** *** **** * ****** ** *  *  * *  *    * ** **** *** **    *
    }
  *  **  * **  * ** ***** **  **      **   *  *  ** * ** *
}

Comments

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

---

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

---

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

---

Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
Case 3: Wrong output
Case 4: Wrong output

Answer 9

Hidden content!
#include <stdio.h>
#include   * **  *    * ***

int main()
{
**   *  *   * *  *  *    * * **** n,sum;
  *    ** * ** *    ** **  *  * ** ** *** **      *   **  ** ***** 

 *     *** ** * * *  * * ***  **     
   *****  ** ** * * **      *** *
*  *  ** *    **   ****** *   *** **** *** * * **** ****** 10+n*0.6;
**        * ** *  **** *  ** 

     * ***  * * * ****** *  if(n>30 && n<=50)
   * *    *  ** *** *** * 
***  **  * **** **** * ** * **  ****    *     ***** *  10+18+(n-30)*0.8;
   * * *  **   *  * * ** * *** * 

 **  *   ** *   ******* **  *  *  if (n>50 && n<=60)
**  ** *     *  ******     ***  *    **  **  *** **** **** * ** *  *

 *   *** *  * *****   ***  *  
**   *    *     ****     *     *  * *  *  ** *  * **    * ***   *  *****   * **** 

 *     * *   ***  **  *** ** * * ***** %.2f",sum);

  ** * ***    *   *  **  * * 0;
}

Comments

Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
Case 3: Correct output
Case 4: Correct output